During the fall and winter, you can hike along the trails of Austria's Grüner See (or Green Lake) park. But as spring comes on, the snows melt down from the surrounding mountains, turning the area into a beautiful lake where scuba divers can see what above-ground scenes look like underwater. »6/24/12 12:30pm 6/24/12 12:30pm

On February 5th, more than twenty years after they first started drilling, Russian scientists finally broke through the last remaining layers of an ice sheet that has separated Lake Vostok from the rest of the world for twenty million years. »2/14/12 12:50pm 2/14/12 12:50pm

For years, fish fossils have turned up in the deserts of western Egypt, and nobody could explain why. Now we know: Long ago, the Egyptian desert was home to a body of water the size of Lake Michigan. »12/03/10 12:48pm 12/03/10 12:48pm